Oh, it's a Chevy. There's no doubt about that. Somehow, I'd think that a Blazer would be too old to be a police truck, even for the movies and television. That would be like having T.J. Hooker or Hunter in police departments that still have fleets of 1967 Plymouth Furys or 1969 Plymouth Belvederes & Satellites.

From the looks of the wheels, they are from an older model 90's (i.e. Blazer). The Tahoe had similar wheels without the exposed lugs. Also, I know it's far away but it doesn't appear to have a third brake light which would indicate a 1992-1993. So I would have to agree on Blazer.